function assertFalseimport { assertFalse } from "https://dotland.deno.dev/std@0.145.0/testing/asserts.ts"; assertFalse(expr: unknown, msg?): asserts expr is falseMake an assertion, error will be thrown if expr have truthy value. Make an assertion, error will be thrown if expr have truthy value. Parametersexpr: unknownoptionalmsg = [UNSUPPORTED]Returnsasserts expr is false